﻿#region Using References

using System;
using System.Globalization;
using System.Windows.Data;

#endregion

namespace Beaker.OpenCube.WorldViewer.Converters
{
	public sealed class TimeToYCoordConverter
		: IValueConverter
	{
		/// <summary>
		/// Converts a value. 
		/// </summary>
		/// <returns>
		/// A converted value. If the method returns null, the valid null value is used.
		/// </returns>
		/// <param name="value">The value produced by the binding source.</param><param name="targetType">The type of the binding target property.</param><param name="parameter">The converter parameter to use.</param><param name="culture">The culture to use in the converter.</param>
		public object Convert( object value, Type targetType, object parameter, CultureInfo culture )
		{
			if( value is TimeSpan )
			{
				var time = (TimeSpan)value;
				double hours = time.TotalHours;
				if( hours < 6d )
					hours += 24d;
				hours -= 6d;
				hours %= 12;

				return 80d - ( ( hours / 12d ) * 80d );
			}

			throw new NotSupportedException();
		}

		/// <summary>
		/// Converts a value. 
		/// </summary>
		/// <returns>
		/// A converted value. If the method returns null, the valid null value is used.
		/// </returns>
		/// <param name="value">The value that is produced by the binding target.</param><param name="targetType">The type to convert to.</param><param name="parameter">The converter parameter to use.</param><param name="culture">The culture to use in the converter.</param>
		public object ConvertBack( object value, Type targetType, object parameter, CultureInfo culture )
		{
			throw new NotSupportedException();
		}
	}
}
